WO2021106741A1 - リニア振動モータ、およびそれを用いた電子機器 - Google Patents

リニア振動モータ、およびそれを用いた電子機器 Download PDF

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Publication number
WO2021106741A1
WO2021106741A1 PCT/JP2020/043217 JP2020043217W WO2021106741A1 WO 2021106741 A1 WO2021106741 A1 WO 2021106741A1 JP 2020043217 W JP2020043217 W JP 2020043217W WO 2021106741 A1 WO2021106741 A1 WO 2021106741A1
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WIPO (PCT)
Prior art keywords
shaft
vibration motor
linear vibration
magnet
vibrator
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Application number
PCT/JP2020/043217
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English (en)
French (fr)
Japanese (ja)
Inventor
剛志 栗田
Original Assignee
株式会社村田製作所
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Application filed by 株式会社村田製作所 filed Critical 株式会社村田製作所
Priority to JP2021561359A priority Critical patent/JPWO2021106741A1/ja
Priority to CN202080073948.3A priority patent/CN114599460A/zh
Publication of WO2021106741A1 publication Critical patent/WO2021106741A1/ja
Priority to US17/714,795 priority patent/US20220231588A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system

Definitions

  • This disclosure relates to a linear vibration motor and an electronic device using the linear vibration motor.
  • FIG. 22 is a cross-sectional view of the linear vibration motor described in Patent Document 1.
  • the linear vibration motor 300 includes a housing 301, an oscillator 302, a first guide 303, a second guide 304, and a coil 305.
  • the vibrator 302 includes a first magnet M301, a second magnet M302, and a fourth magnet M304.
  • a third magnet M303 and a fifth magnet M305 are fixed to the housing 301.
  • the vibrator 302 is provided along the first direction D1 by the coil 305, the first magnet M301 which is a driving magnet, and the first guide 303 and the second guide 304 that guide the movement of the vibrator 302. Vibrate.
  • the second magnet M302 and the third magnet M303, and the fourth magnet M304 and the fifth magnet M305 are arranged along the first direction D1 so as to repel each other. That is, the second magnet M302 and the third magnet M303, and the fourth magnet M304 and the fifth magnet M305 form a magnetic spring mechanism against vibration along the first direction D1 of the vibrator 302. There is.
  • the vibration of the vibrator 302 is transmitted to the housing 301 via the third magnet M303 and the fifth magnet M305, and is sensed as the vibration of the linear vibration motor 300.
  • linear vibration motors have been used in electronic devices such as portable information terminals as vibration generators for skin sensation feedback or for confirming key operations and incoming calls by vibration.
  • vibration generators for skin sensation feedback or for confirming key operations and incoming calls by vibration.
  • the vibrator vibrates normally in one direction and that unnecessary friction between the vibrator and the guide fixed to the housing is reduced.
  • the vibrator 302 and each guide have protrusions provided on each side surface of the vibrator 302 fitted in a groove of each guide facing each side surface. Engage by engaging. Therefore, when the dimensional accuracy of the width of the vibrator 302 is low and the width is shorter than the intended length, the vibrator 302 rattles between the guides and the vibrator is unidirectionally (that is, the first direction D1). There is a risk that it will not vibrate normally. On the other hand, if the width of the vibrator 302 is longer than the intended length, the vibrator 302 may be excessively pressed against each guide, causing unnecessary friction with each guide.
  • the purpose of this disclosure is to provide a linear vibration motor that can facilitate unidirectional vibration of the vibrator and reduce unnecessary friction between the vibrator and a guide fixed to the housing. It is to provide the electronic device used.
  • a first aspect of the linear vibration motor according to this disclosure includes a housing, an oscillator, and a first shaft and a second shaft.
  • the first shaft and the second shaft correspond to guides fixed to the housing.
  • the transducer is housed in a housing, is vibrable along a first direction, and has a first through hole and space extending along the first direction, respectively.
  • the first shaft and the second shaft are arranged along the second direction, and are fixed to the housing so as to slidably support the vibrator along the first direction.
  • the first shaft is fitted into the first through hole, and the second shaft is inserted into the space.
  • the second shaft and a part of the wall defining the space are in contact with each other in the first direction and the third direction orthogonal to the second direction, respectively.
  • the second aspect of the linear vibration motor includes a housing similar to the first aspect described above, an oscillator, and a first shaft and a second shaft. Then, in the second aspect of the linear vibration motor, the second shaft and a part of the wall defining the space are low in the first direction and the third direction orthogonal to the second direction, respectively. They are in contact with each other via a second member containing a friction material.
  • the electronic device includes a linear vibration motor according to this disclosure and a device housing.
  • the linear vibration motor is housed in the equipment housing.
  • the linear vibration motor according to the present disclosure can easily vibrate the vibrator in one direction, and unnecessary friction between the vibrator and the guide fixed to the housing, that is, the first shaft and the second shaft. Can be reduced. Further, since the electronic device according to this disclosure uses the linear vibration motor according to this disclosure, it is possible to generate sufficient vibration for skin sensory feedback and confirmation of key operation, incoming call, and the like.
  • FIG. 4A is a perspective view of the first member 2d included in the vibrator 2 of the linear vibration motor 100.
  • FIG. 4B is a front view of the first member 2d.
  • FIG. 4C is a cross-sectional view taken along the line of the first member 2d cut along the plane including the line AA shown in FIG. 4B. Corresponds to FIG.
  • FIG. 4C which schematically shows a change in the contact state between the first member 2d and the second shaft 4 when the width of the vibrator 2 varies in the second direction D2. It is a sectional view.
  • FIG. 4B schematically shows a change in the contact state between the first member 2d and the second shaft 4 when the second shaft 4 is tilted with respect to the first direction D1. It is a corresponding sectional view.
  • FIG. 7A is a front view of a first modification of the first member 2d.
  • FIG. 7B is a front view of a second modification of the first member 2d.
  • FIG. 7C is a front view of a third modification of the first member 2d.
  • FIG. 7D is a front view of a fourth modification of the first member 2d.
  • FIG. 8A is a perspective view of a fifth modification of the first member 2d.
  • FIG. 8B is a front view of a fifth modification of the first member 2d.
  • FIG. 8C is a cross-sectional view taken along the line of a fifth modification of the first member 2d cut along the plane including the line BB shown in FIG. 8B.
  • It is a perspective view of the vibrator 2 provided with the 6th modification of the 1st member 2d.
  • It is a perspective view corresponding to FIG. 3 of the linear vibration motor 100A which is the 1st modification of the linear vibration motor 100.
  • FIG. 11A is a front view of the second member 7 of the linear vibration motor 100A.
  • FIG. 11 (B) is a cross-sectional view taken along the line of the second member 7 cut along the plane including the line CC shown in FIG. 11 (A).
  • FIG. 11C is a cross-sectional view taken along the line corresponding to FIG. 11B, which is a first modification of the second member 7 in the linear vibration motor 100A. It is a front view of the 2nd modification of the 2nd member 7 in the linear vibration motor 100A. It is a perspective view corresponding to FIG. 3 of the linear vibration motor 100B which is the 2nd modification of the linear vibration motor 100.
  • FIG. 14A is a front view of the second member 7 of the linear vibration motor 100B.
  • FIG. 14 (B) is a cross-sectional view taken along the line of the second member 7 cut along the plane including the line DD shown in FIG. 14 (A).
  • FIG. 14C is a cross-sectional view taken along the line corresponding to FIG. 14B, which is a first modification of the second member 7 in the linear vibration motor 100B. It is a front view of the 2nd modification of the 2nd member 7 in the linear vibration motor 100B.
  • FIG. 16A is a perspective view of a third modification of the second member 7 in the linear vibration motor 100B.
  • FIG. 16B is a front view of another form of the third modification of the second member 7.
  • FIG. 16C is a front view of still another form of the third modification of the second member 7.
  • a fourth modification of the second member 7 in the linear vibration motor 100B is a perspective view of the vibrator 2 in a state of being fitted in a groove T formed on the other side surface of the substrate 2a.
  • FIG. 18A is a perspective view of a fourth modification of the second member 7.
  • FIG. 18B is a perspective view showing a state in which a fourth modification of the second member 7 is fitted into a groove T formed on the other side surface of the substrate 2a.
  • a fifth modification of the second member 7 in the linear vibration motor 100B is a perspective view of the vibrator 2 in a state of being fitted in a groove T formed on the other side surface of the substrate 2a.
  • FIG. 20A is a perspective view of a fifth modification of the second member 7.
  • 20B is a perspective view showing a state in which a fifth modification of the second member 7 is fitted in a groove T formed on the other side surface of the substrate 2a. It is a transparent perspective view of the portable information terminal 1000 which is a typical form of the electronic device which concerns on this disclosure. It is an exploded perspective view of the linear vibration motor 300 of the background technology.
  • linear vibration motor 100 showing a schematic form of the linear vibration motor according to this disclosure will be described with reference to FIGS. 1 to 5.
  • FIG. 1 is a perspective view of the linear vibration motor 100.
  • FIG. 2 is a perspective view when the first shaft 3 is on the front side except for the top plate portion 1d of the housing 1 of the linear vibration motor 100.
  • FIG. 3 is a perspective view when the second shaft 4 is on the front side except for the top plate portion 1d of the housing 1 of the linear vibration motor 100.
  • the linear vibration motor 100 includes a housing 1, an oscillator 2, a first shaft 3 and a second shaft 4, a coil 5, and a lead-out wiring member to the coil 5. 6, a fourth magnet M4, and a fifth magnet M5 are provided.
  • the housing 1 from which the top plate portion 1d is removed has a bottom plate portion 1a extending in the first direction D1 described later, and a first side surface 1b and a second side surface 1c formed by bending the bottom plate portion 1a. Including. That is, a space in which the vibrator 2 is accommodated is formed by the bottom plate portion 1a, the first side surface 1b, and the second side surface 1c, and the top plate portion 1d is a lid material covering the space. The top plate portion 1d is locked to the bottom plate portion 1a, the first side surface 1b, and the second side surface 1c, respectively.
  • stainless steel such as SUS304 can be used.
  • the top plate portion and the other portions may be made of different materials.
  • the first side surface 1b and the second side surface 1c are formed by being bent at right angles to the bottom plate portion 1a.
  • the first shaft 3 and the second shaft 4 each extend along the first direction D1 and are arranged along the second direction D2 parallel to the bottom plate portion 1a and orthogonal to the first direction D1. ..
  • the first shaft 3 and the second shaft 4 slidably support the vibrator 2 along the first direction D1 as described later.
  • stainless steel such as SUS304 can be used as SUS304.
  • first shaft 3 and the second shaft 4 are fixed so as to be bridged to the first side surface 1b and the second side surface 1c, respectively.
  • the method of fixing each shaft to the first side surface 1b and the second side surface 1c is not limited to the above.
  • each shaft may be fixed to the substrate 2a by using, for example, another member.
  • a fourth magnet M4 is fixed to the first side surface 1b so that the arrangement direction of the magnetic poles is parallel to the first direction D1, and a similar arrangement of magnetic poles is provided on the second side surface 1c.
  • the fifth magnet M5 is fixed in the direction.
  • an epoxy-based adhesive can be used for fixing the fourth magnet M4 to the first side surface 1b and fixing the fifth magnet M5 to the second side surface 1c.
  • the housing 1 of the linear vibration motor 100 has a structure in which surfaces orthogonal to the bottom plate portion 1a, the first side surface 1b, and the second side surface 1c are opened as described above, but the shape is limited to the above. I can't.
  • the housing 1 may have a closed structure when the top plate portion is attached.
  • the housing 1 includes a fixing portion for fixing in an electronic device such as a portable information terminal, but the illustration of the fixing portion is omitted (the same applies hereinafter).
  • the vibrator 2 is housed in the above-mentioned space in the housing 1.
  • the vibrator 2 includes a substrate 2a, a first sleeve 2b, a second sleeve 2c and a first member 2d, and a first magnet M1, a second magnet M2 and a third magnet M3.
  • the vibrator 2 can vibrate along the first direction D1 by applying the driving force described later to the first magnet M1 which is the driving magnet from the coil 5 described later. ..
  • the substrate 2a has three convex portions on one side surface and two convex portions on the other side surface, and has a rectangular parallelepiped shape extending in the first direction D1 described later.
  • the number and arrangement of the convex portions are not limited to the above.
  • recesses into which magnets for forming a magnetic spring mechanism, which will be described later, are inserted are formed on one end face and the other end face of the substrate 2a, respectively. In the linear vibration motor 100, the recess penetrates from one main surface of the substrate 2a to the other main surface, but is not limited to the above.
  • the first sleeve 2b and the second sleeve 2c are fixed by being fitted into the grooves of the respective convex portions. That is, in the linear vibration motor 100, the vibrator 2 has two through holes (first through holes) extending along the first direction D1 on one side surface side.
  • the through hole referred to here is not limited to the sleeve shown in FIG. 2, and may have a short length along the first direction D1 such as an annulus. Further, the through hole may have a part of the side surface open. Further, the number of through holes constituting the first through hole is not limited to two.
  • the convex portion arranged in the central portion of one side surface and the two convex portions provided on the other side surface extend along the first direction D1 so that each shaft and the convex portion do not come into contact with each other. Groove is provided. Further, a first member 2d, which will be described in detail later, is fixed to the central portion of the other side surface of the substrate 2a.
  • the substrate 2a also functions as a weight portion.
  • the vibrator 2 may further include a weight portion different from that of the substrate 2a.
  • the material of the substrate 2a and another weight portion for example, W (tungsten) and an alloy containing the same, stainless steel such as SUS304 and Al and an alloy containing the same can be used.
  • the material of the substrate 2a and another weight portion must be a material having a large specific gravity such as W (tungsten). Is preferable.
  • a through hole is provided in the central portion of the substrate 2a, and the first magnet M1 is inserted and fixed so as to face the coil 5 described later.
  • an epoxy-based adhesive is used for fixing the first magnet M1 to the substrate 2a.
  • the first magnet M1 includes five magnets M1a, M1b, M1c, M1d and M1e arranged along the first direction D1, and these magnets are arranged in a Halbach array. Is located in.
  • the configuration of the first magnet M1 is not limited to the above.
  • the first magnet M1 which is a driving magnet may include at least one magnet to which a driving force for vibration of the vibrator 2 is given from the coil 5 described later.
  • the first magnet M1 constitutes a Halbach array, it may include three or more odd-numbered magnets arranged along the first direction D1.
  • the arrangement of each magnet of the driving magnet capable of concentrating the magnetic field by the driving magnet between the driving magnet and the coil for driving the vibrator is broadly referred to as a Halbach array. Therefore, the number of magnets constituting the Halbach array may be an odd number of 3 or more.
  • the material of the first magnet M1 for example, a rare earth magnet such as Nd-Fe-B type or Sm-Co type can be used.
  • a rare earth magnet such as Nd-Fe-B type or Sm-Co type can be used.
  • the first magnet M1 it is preferable to use an Nd—Fe—B-based rare earth magnet that has a strong magnetic force and can increase the driving force of the vibrator 2.
  • the second magnet M2 is aligned with the fourth magnet M4 fixed to the first side surface 1b of the housing 1 with the magnetic pole arrangement direction parallel to the first direction D1. It is inserted and fixed so as to face each other and have a magnetically repulsive arrangement.
  • the third magnet M3 faces the fifth magnet M5 fixed to the second side surface 1c of the housing 1 with the magnetic pole arrangement direction parallel to the first direction D1. , Inserted and fixed in a magnetically repulsive arrangement.
  • the centers of gravity of the second magnet M2, the third magnet M3, the fourth magnet M4, and the fifth magnet M5 are arranged on the same axis parallel to the first direction D1 in a plan view.
  • the second magnet M2, the third magnet M3, the fourth magnet M4, and the fifth magnet M5 may be arranged so that at least a part thereof overlaps when viewed from the first direction D1.
  • the north pole of the second magnet M2 and the north pole of the fourth magnet M4 face each other
  • the south pole of the third magnet M3 and the south pole of the fifth magnet M5 face each other.
  • the pair of the second magnet M2 and the fourth magnet M4, and the pair of the third magnet M3 and the fifth magnet M5 are magnetic springs for vibration along the first direction D1 of the vibrator 2, respectively. It constitutes a mechanism.
  • an epoxy-based adhesive can be used for fixing the second magnet M2 and the third magnet M3 to the substrate 2a.
  • each magnet By inserting each magnet into each recess, it becomes easier to fix each magnet to the substrate 2a. Further, each magnet can be fixed to the substrate 2a with high accuracy. However, each magnet may be fixed to the substrate 2a without being inserted into the recess.
  • the material of the second magnet M2, the third magnet M3, the fourth magnet M4, and the fifth magnet M5 for example, rare earth magnets such as Nd-Fe-B type or Sm-Co type are used.
  • rare earth magnets such as Nd-Fe-B type or Sm-Co type are used.
  • the coil 5 is formed by winding a conductor wire around a virtual winding axis.
  • the winding axis of the housing 1 is parallel to the normal direction of the bottom plate portion 1a of the housing 1, that is, the winding axis is orthogonal to the first direction D1 and the second direction D2. It is fixed to the bottom plate portion 1a.
  • the shape of the coil 5 when viewed from the winding axis direction is a rectangular shape with rounded corners.
  • the coil 5 for example, a coil obtained by winding a coated Cu wire having a diameter of 0.06 mm for about 50 turns is used.
  • the coil 5 is connected to a regulated power supply via a power amplifier by a lead-out wiring member 6 such as a flexible substrate on which a wiring pattern is printed.
  • the coil 5 applies a driving force to the first magnet M1 so that the vibrator 2 can vibrate along the first direction D1 by being energized via the lead-out wiring member 6.
  • the winding of the coil 5 is not shown.
  • the direction of the Lorentz force described above is aligned with the first direction D1 as compared with the case where the coil 5 is annular. Cheap. Therefore, the driving force applied to the vibrator 2 along the first direction D1 becomes large, which is preferable.
  • the vibrator 2 and the first shaft 3 and the second shaft 4 are engaged as follows. First, the engagement between the vibrator 2 and the first shaft 3 will be described. As described above, the first sleeve 2b is on one of the two convex portions provided on one side surface of the substrate 2a of the vibrator 2, and the second sleeve 2c is on one side surface of the substrate 2a. It is fixed to the other side of the part.
  • the materials of the first sleeve 2b and the second sleeve 2c include, for example, polyphenylene sulfide-based materials, so-called liquid crystal polymers, which are low-friction materials such as aromatic polyester-based and polyacetal-based materials, and stainless steel such as brass, Ni, and SUS304. Steel or the like can be used.
  • the low friction material refers to a material exhibiting a dynamic friction coefficient of about 0.15 or less in the thrust type carbon steel with respect to carbon defined by JIS K7218.
  • fitting means inserting and fitting the first shaft 3 into each sleeve so that the play is suppressed with the accuracy specified by the dimensional tolerance. ..
  • the vibration of the vibrator 2 is regulated along the first direction D1.
  • the engagement between the vibrator 2 and the first shaft 3 is not limited to the above.
  • the vibrator 2 includes the first member 2d fixed to the central portion of the other side surface of the substrate 2a.
  • the first member 2d will be described in detail with reference to FIGS. 4 and 5.
  • FIG. 4A is a perspective view of the first member 2d included in the vibrator 2 of the linear vibration motor 100.
  • FIG. 4B is a front view of the first member 2d.
  • FIG. 4C is an arrow cross-sectional view of the first member 2d including the line AA shown in FIG. 4B and cut along a plane orthogonal to the first direction D1.
  • FIG. 5 schematically shows a change in the contact state between the first member 2d and the second shaft 4 when there is a variation in the width of the vibrator 2 in the second direction D2 (C). It is a cross-sectional view corresponding to).
  • the second shaft 4 is also shown in FIGS. 4 and 5 so that the contact state with the first member 2d can be understood.
  • the first member 2d is formed with a groove T that is fixed to the other side surface of the substrate 2a and is open in the second direction D2.
  • the groove T is deeper than the diameter of the second shaft 4 and extends along the first direction D1.
  • the groove T has a longer width along a third direction D3 orthogonal to the first direction D1 and the second direction D2 from the central portion of the groove T toward one end and the other end.
  • the change in the width of the groove T does not have to start from the central portion of the groove T, and may start from any part inside the groove T.
  • the first member 2d does not have to be symmetrical when viewed from the second direction D2.
  • the vibrator 2 has a space extending along the first direction D1 on the other side surface side.
  • the space is longer in length along the third direction D3 from the inside toward one end and the other end. That is, in the first member 2d shown in FIG. 3, a convex portion whose height increases from one end of the groove T and the other end toward the central portion is provided in the groove T.
  • the cross-sectional shape of the groove T can be various shapes as shown in a modification described later. Further, the cross section of the groove T is U-shaped, but the cross section is not limited to this.
  • the linear vibration motor 100 the case where the space provided by the vibrator 2 is the groove T has been described, but the form of the space is not limited to the groove, and a second through hole (second through hole) described later is used. It may not be open in the direction D2 of.
  • a low friction material such as polyacetal type, polyetheretherketone type, fluororesin type and polyester type
  • the low friction material means the material shown in the above definition.
  • a metal bearing material such as a Cu-C type may be used.
  • the second shaft 4 is inserted into the groove T described above. Then, the second shaft 4 and a part of the wall defining the groove T are in contact with each other in the third direction D3 orthogonal to the first direction D1 and the second direction D2, respectively.
  • the upper side of the groove T on the drawing is the central portion in the length direction of the groove T, that is, the portion having the shortest width along the third direction D3. At least one of the side wall S1 and the lower side wall S2 is slidably in contact with the second shaft 4.
  • the second shaft 4 and a part of the wall defining the above-mentioned space are in contact with each other at the shortest length along the third direction D3 of the space. As shown in FIGS. 4B and 4C, it is preferable that both the side walls S1 and S2 are in contact with the second shaft 4.
  • the first shaft 3 is fitted into the through hole (first through hole) provided in the vibrator 2 so as to extend along the first direction D1.
  • the vibration of the vibrator 2 is regulated along the first direction D1.
  • the second shaft 4 and the first member 2d are slidably in contact with each other as shown in FIG. That is, as the second shaft 4 is virtually shown by the long broken line in FIG. 5, the second shaft 4 is shorter than the intended length in the second direction D2. Is surely in contact with at least one of the side walls S1 and S2 of the groove T. Therefore, the vibrator 2 does not rattle between the first shaft 3 and the second shaft 4. As a result, the vibrator 2 can be easily vibrated along the first direction D1.
  • the oscillator 2 is the third oscillator 2 even when the width of the oscillator 2 is longer than the intended length in the second direction D2. It can move in the direction D2 of 2. Therefore, the vibrator 2 is not excessively pressed against the first shaft 3 and the second shaft 4. As a result, unnecessary friction between the vibrator 2 and each shaft can be reduced.
  • FIG. 6 schematically shows a change in the contact state between the first member 2d and the second shaft 4 when the second shaft 4 is tilted with respect to the first direction D1. It is sectional drawing corresponding to (B).
  • the second shaft 4 is virtually shown by the long or short dashed line in FIG.
  • the shaft 4 of the shaft 4 may be tilted.
  • the second shaft 4 and the first member 2d can be brought into contact with each other with a small area in the central portion of the groove T. Therefore, even if the second shaft 4 is tilted with respect to the first direction D1, the vibrator 2 is not excessively pressed against the second shaft 4. As a result, excessive friction between the vibrator 2 and the second shaft 4 can be suppressed.
  • This structure can suppress not only the above case but also the friction between the vibrator 2 and the second shaft 4 due to the deviation of the driving direction of the vibrator 2 from the first direction D1.
  • a current flows through the coil 5
  • a Lorentz force is applied to the coil 5 by the magnetic field of the first magnet M1
  • a reaction force of the Lorentz force is applied to the first magnet M1. That is, the coil 5 applies a driving force to the first magnet M1 and eventually to the vibrator 2 along the first direction D1 by energization.
  • the coil 5 is not completely rectangular, the corners are rounded, and the portions corresponding to each side of the rectangle may not be exactly orthogonal to the first direction D1. .. Therefore, the direction of the reaction force of the Lorentz force received by the vibrator 2 may fluctuate slightly from the first direction D1. As a result, as schematically shown in FIGS. 5 and 6, the relative positional relationship between the vibrator 2 and the second shaft 4 may change during the vibration of the vibrator 2.
  • the vibrator 2 and the second shaft 4 are relative to each other due to the fluctuation of the reaction force of the Lorentz force. It is possible to absorb the deviation of the positional relationship. As a result, friction between the vibrator 2 and the second shaft 4 can be suppressed.
  • FIG. 7A is a front view of a first modification of the first member 2d.
  • FIG. 7B is a front view of a second modification of the first member 2d.
  • FIG. 7C is a front view of a third modification of the first member 2d.
  • FIG. 7D is a front view of a fourth modification of the first member 2d.
  • the second shaft 4 is also shown so that the contact state with the first member 2d can be understood.
  • the upper side wall S1 and the lower side wall S2 on the drawing of the groove T are flat surfaces when viewed from the second direction D2. That is, in the first modification, the first member 2d and the second shaft 4 are in contact with each other by two lines extending in the first direction D1. Even in this case, the vibrator 2 does not rattle between the first shaft 3 and the second shaft 4, and the vibrator 2 is excessively pressed against the first shaft 3 and the second shaft 4. There is no. Therefore, the vibrator 2 can be easily vibrated along the first direction D1, and unnecessary friction between the vibrator 2 and each shaft can be reduced.
  • the upper side wall S1 and the lower side wall S2 on the drawing of the groove T are serrated when viewed from the second direction D2. That is, in the second modification, the first member 2d and the second shaft 4 are in contact with each other in a minute region. Therefore, in the second modification, the slidability is higher than that in the first modification. In the second modification, the first member 2d and the second shaft 4 are in contact with each other at four points, but the number of contact points is not limited to this. Also in this case, the vibrator 2 can be easily vibrated along the first direction D1, and unnecessary friction between the vibrator 2 and each shaft can be reduced.
  • the upper side wall S1 and the lower side wall S2 on the drawing of the groove T are trapezoidal when viewed from the second direction D2. That is, in the third modification, the first member 2d and the second shaft 4 are in contact with each other by two lines extending in the first direction D1. However, in the third modification, the two lines at the contact points are shorter than those in the first modification. Therefore, in the third modification, the slidability is higher than that in the first modification. Also in this case, the vibrator 2 can be easily vibrated along the first direction D1, and unnecessary friction between the vibrator 2 and each shaft can be reduced.
  • the upper side wall S1 and the lower side wall S2 on the drawing of the groove T are arcuate when viewed from the second direction D2. That is, in the fourth modification, the first member 2d and the second shaft 4 are in contact with each other in a minute region. Therefore, in the second modification, the slidability is higher than that in the first modification. Also in this case, the vibrator 2 can be easily vibrated along the first direction D1, and unnecessary friction between the vibrator 2 and each shaft can be reduced.
  • the deviation can also be absorbed.
  • FIG. 8A is a perspective view of a fifth modification of the first member 2d.
  • FIG. 8B is a front view of a fifth modification of the first member 2d.
  • FIG. 8C is an arrow of a fifth modification of the first member 2d, including the line BB shown in FIG. 8B and cut along a plane orthogonal to the first direction D1. It is a cross-sectional view.
  • the second shaft 4 is also shown so that the contact state with the first member 2d can be understood.
  • the first member 2d is formed with a through hole H (second through hole) that penetrates the first member 2d along the first direction D1. ing. That is, also in the fifth modification, the vibrator 2 has a space extending along the first direction D1 on the other side surface side. The space is longer in length along the third direction D3 from the inside toward one end and the other end. That is, in the fifth modification of the first member 2d shown in FIG. 8, one end of the through hole H and a convex portion whose height increases from the other end toward the center are provided in the through hole H. Has been done.
  • the shape of the through hole H is not limited to the shape shown in FIG.
  • the fifth modification as shown in FIG. 8B, at least one of the upper side wall S1 and the lower side wall S2 on the drawing of the through hole H at the central portion in the length direction of the groove T. And the second shaft 4 are slidably in contact with each other. That is, even in the linear vibration motor 100 in which the fifth modification of the first member 2d is used, the second shaft 4 and the part of the wall defining the space described above are the third direction D3 of the space. The contact is made at the shortest length along the line. As shown in FIGS. 8B and 8C, it is preferable that both the side walls S1 and S2 are in contact with the second shaft 4.
  • the vibrator 2 can be easily vibrated along the first direction D1 as in the embodiment of the first member 2d shown in FIG. 3, and the vibrator 2 and the vibrator 2 can be easily vibrated. Unnecessary friction with each shaft can be reduced. Further, in the fifth modification, the relative positional relationship between the vibrator 2 and the second shaft 4 derived from the inclination of the second shaft 4 with respect to the first direction D1 and the fluctuation of the reaction force of the Lorentz force. The deviation can also be absorbed.
  • FIG. 9 is a perspective view of the vibrator 2 including the sixth modification of the first member 2d.
  • FIG. 9 also shows the first shaft 3 and the second shaft 4 so that the engaged state of the vibrator 2 with the first shaft 3 and the second shaft 4 can be understood.
  • the first member 2d is a sleeve having the same shape and material as the first sleeve 2b and the second sleeve 2c.
  • the first sleeve 2b and the second sleeve 2c are fitted into a groove provided on one side surface side of the substrate 2a along the first direction D1, and the first member 2d is the other of the substrate 2a. It is fitted into a groove provided on the side surface side along the first direction D1.
  • each groove provided in the substrate 2a opens to the lower side in the drawing in the above-mentioned third direction D3. Therefore, the first sleeve 2b, the second sleeve 2c, the first member 2d, and the first shaft 3 and the second shaft 4 in the respective grooves are originally invisible, but are seen through. It is illustrated.
  • the first shaft 3 is slidably fitted into the first sleeve 2b and the second sleeve 2c.
  • the second shaft 4 is slidably fitted into the first member 2d, which is a sleeve having the same shape and material as the first sleeve 2b and the second sleeve 2c.
  • the first member 2d is fitted into the groove on the other side surface side of the substrate 2a so as to be tiltable in the third direction D3 when an external force is applied.
  • the second shaft 4 may be tilted with respect to the third direction D3 due to the problem of the accuracy of assembling the second shaft 4 to the housing 1.
  • the first member 2d is slantably fitted in the groove on the other side surface side of the substrate 2a.
  • the first member 2d is tilted according to the tilt of the second shaft 4.
  • the vibrator 2 is not excessively pressed against the second shaft 4.
  • excessive friction between the vibrator 2 and the second shaft 4 can be suppressed.
  • each groove provided on the substrate 2a is open in the third direction D3
  • the first member 2d Can be tilted in the second direction D2. That is, in this case, the first member 2d is tilted according to the tilt of the second shaft 4 with respect to the second direction D2, and similarly, excessive friction between the vibrator 2 and the second shaft 4 is performed. Can be suppressed.
  • the linear vibration motor 100A which is a first modification of the linear vibration motor 100 which is a schematic form of the linear vibration motor according to the present disclosure, will be described with reference to FIGS. 10 and 11.
  • FIG. 10 is a perspective view of the linear vibration motor 100A, which is a first modification of the linear vibration motor 100, corresponding to FIG.
  • FIG. 11A is a front view of the second member 7 of the linear vibration motor 100A.
  • 11 (B) is a cross-sectional view of the second member 7 including the CC line shown in FIG. 11 (A) and cut along a plane orthogonal to the first direction D1.
  • FIG. 11C is a cross-sectional view taken along the line corresponding to FIG. 11B, which is a first modification of the second member 7 in the linear vibration motor 100A.
  • the second shaft 4 is also shown so that the contact state with the first member 2d can be understood.
  • the linear vibration motor 100A differs from the linear vibration motor 100 in the way in which the vibrator 2 and the second shaft 4 are engaged. Since the other configurations are basically the same as those of the linear vibration motor 100, the overlapping description is omitted.
  • a second member 7 containing a low friction material is provided to the central portion of the second shaft 4 so as to have a cylindrical shape. Further, on the other side surface of the substrate 2a of the vibrator 2, a groove T is formed which is open in the second direction D2 and whose depth is deeper than the diameter of the second shaft 4 and extends along the first direction D1. ing. That is, in the linear vibration motor 100A, this groove T corresponds to the space extending along the first direction D1.
  • the second shaft 4 and a part of the wall defining the groove T are in contact with each other in the above-mentioned third direction D3.
  • the shaft 4 is slidably in contact with the shaft 4 via the second member 7.
  • low friction materials such as polyacetal type, polyetheretherketone type, fluororesin type and polyester type can be used.
  • the low friction material is defined by the definition described in the description of the material used for the first member 2d.
  • the second member 7 has a cylindrical shape, but the present invention is not limited to this. That is, the second member 7 may have a shape in which at least one of the upper side wall S1 and the lower side wall S2 of the groove T and the second shaft 4 are indirectly slidably contacted with each other. For example, as shown in FIG. 11C, the second member 7 may have a shape in which a portion that cannot come into contact with the groove T is removed. Further, the position where the second member 7 is applied is not limited to the central portion of the second shaft 4. Further, a plurality of second members 7 may be attached to the second shaft 4. The width of the second member 7 in the first direction D1 is preferably 2 mm or less.
  • the vibrator 2 does not rattle between the first shaft 3 and the second shaft 4, and the vibrator 2 excessively presses against the first shaft 3 and the second shaft 4. It will never be done. Therefore, the vibrator 2 can be easily vibrated along the first direction D1, and unnecessary friction between the vibrator 2 and each shaft can be reduced. Further, since the number of parts is reduced as compared with the linear vibration motor 100, the assembly accuracy and the efficiency of the assembly work can be improved.
  • FIG. 12 is a front view of a second modification of the second member 7.
  • a second member 7 containing a low friction material is provided to the central portion of the second shaft 4.
  • the outer shape of the second member 7 of the second modification is a barrel shape extending along the first direction D1. That is, the second member 7 has a tubular shape whose cross-sectional area decreases from the central portion of the second member 7 toward one end and the other end.
  • the position where the second member 7 is applied is not limited to the central portion of the second shaft 4. Further, a plurality of second members 7 may be attached to the second shaft 4.
  • the second member 7 and the second shaft 4 are in contact with each other in a minute region. Therefore, in the second modification, the slidability is higher than that of the cylindrical second member 7. Also in this case, the vibrator 2 can be easily vibrated along the first direction D1, and unnecessary friction between the vibrator 2 and each shaft can be reduced.
  • the deviation can also be absorbed.
  • the linear vibration motor 100B which is a second modification of the linear vibration motor 100 which is a schematic form of the linear vibration motor according to the present disclosure, will be described with reference to FIGS. 13 and 14.
  • FIG. 13 is a perspective view of the linear vibration motor 100B, which is a second modification of the linear vibration motor 100, corresponding to FIG.
  • FIG. 14A is a front view of the second member 7 of the linear vibration motor 100B.
  • 14 (B) is a cross-sectional view taken along the line of the second member 7 including the DD line shown in FIG. 14 (A) and cut at a plane orthogonal to the first direction D1.
  • FIG. 14C is a cross-sectional view taken along the line corresponding to FIG. 14B, which is a first modification of the second member 7 in the linear vibration motor 100B.
  • the linear vibration motor 100B differs from the linear vibration motor 100 in the way in which the vibrator 2 and the second shaft 4 are engaged. Since the other configurations are basically the same as those of the linear vibration motor 100, the overlapping description is omitted.
  • the linear vibration motor 100B also has an opening in the second direction D2 on the other side surface of the substrate 2a of the vibrator 2, and the depth is deeper than the diameter of the second shaft 4, and the first A groove T extending along the direction D1 of is formed. That is, even in the linear vibration motor 100B, this groove T corresponds to the space extending along the first direction D1.
  • a second member 7 containing a low friction material is provided at the central portion of the groove T in the length direction.
  • the second member 7 includes two plate-shaped members 7a and 7b facing each other in the third direction D3, and the upper side wall S1 in the drawing has the plate-shaped member 7a and the lower side wall.
  • a plate-shaped member 7b is attached to S2.
  • the second shaft 4 and a part of the wall defining the groove T are in contact with each other in the above-mentioned third direction D3.
  • the second shaft 4 and a part of the wall defining the groove T are in contact with each other in the above-mentioned third direction D3.
  • at least one of the side wall S1 and the lower side wall S2 on the view of the groove T and the second shaft 4 at the central portion in the length direction of the groove T. Is slidably abutted via the second member 7.
  • it is preferable that both the plate-shaped members 7a and 7b are in contact with the second shaft 4.
  • low friction materials such as polyacetal type, polyetheretherketone type, fluororesin type and polyester type can be used.
  • the low friction material is defined by the definition described in the description of the material used for the first member 2d.
  • the second member 7 when the second member 7 is viewed from the second direction D2, the second member 7 is arranged so as to face each other with the second shaft 4 in between.
  • the second member 7 may include a plurality of sets of the two plate-shaped members having the above positional relationship along the first direction D1.
  • the fact that the two plate-shaped members face each other means that at least a part of the two plate-shaped members overlaps when viewed from the third direction D3. That is, the second member 7 may have a form in which at least one of the upper side wall S1 and the lower side wall S2 of the groove T and the second shaft 4 are indirectly slidably brought into contact with each other.
  • the second member 7 may have a U-shape in which the plate-shaped members 7a and 7b are connected at the bottom of the groove T. Further, the position where the second member 7 is applied is not limited to the central portion in the length direction of the groove T.
  • the width of the second member 7 in the first direction D1 is preferably 2 mm or less.
  • the vibrator 2 does not rattle between the first shaft 3 and the second shaft 4, and the vibrator 2 excessively presses against the first shaft 3 and the second shaft 4. It will never be done. Therefore, the vibrator 2 can be easily vibrated along the first direction D1, and unnecessary friction between the vibrator 2 and each shaft can be reduced. Further, by providing the second member 7 on the groove T side, the assembly accuracy and the efficiency of the assembly work can be improved.
  • FIG. 15 is a front view of a second modification of the second member 7.
  • the cross sections of the plate-shaped members 7a and 7b are arcuate when viewed from the second direction D2.
  • the plate-shaped members 7a and 7b can have, for example, a plate-shaped cross section orthogonal to the second direction D2 or a disk-shaped cross section parallel to the third direction D3.
  • the second member 7 and the second shaft 4 are in contact with each other in a minute region. Therefore, in the second modification, the slidability is higher than that of the cylindrical second member 7. Also in this case, the vibrator 2 can be easily vibrated along the first direction D1, and unnecessary friction between the vibrator 2 and each shaft can be reduced.
  • the deviation can also be absorbed.
  • FIG. 16A is a perspective view of a third modification of the second member 7 in the linear vibration motor 100B.
  • FIG. 16B is a front view of another form of the third modification of the second member 7.
  • FIG. 16C is a front view of still another form of the third modification of the second member 7.
  • the second member 7 includes three plate-shaped members 7a, 7b 1 , and 7b 2 .
  • a plate-shaped member 7a is provided to the upper side wall S1 of the groove T in the drawing, and plate-shaped members 7b 1 and 7b 2 are provided to the lower side wall S2 at intervals. That is, the three plate-shaped members 7b 1 , 7a, and 7b 2 are triangular vertices that are offset from each other in the first direction D1 with the second shaft 4 in between when viewed from the second direction D2. It is located at the position of.
  • a part of the plate-shaped member attached to the upper side wall S1 and a part of the plate-shaped member attached to the lower side wall S2 may overlap.
  • the plate-shaped member 7a when viewed from the third direction D3, the plate-shaped member 7a is arranged at the center of the distance between the plate-shaped member 7b 1 and the plate-shaped member 7b 2, but is not limited to this. ..
  • the second member 7 may include yet another plate-shaped member.
  • the second member 7 may be arranged in a zigzag shape with the second shaft 4 in between, as shown in FIG. 16 (B).
  • FIG. 16C when viewed from the third direction D3, it is applied to the lower side wall S2 between the two plate-shaped members provided to the upper side wall S1 of the groove T.
  • a plurality of plate-shaped members may be arranged.
  • the upper side wall S1 and the lower side wall S2 may be opposite to the above.
  • the number of plate-shaped members provided to the upper side wall S1 and the lower side wall S2 is not particularly limited. That is, when viewed from the second direction D2, the plate-shaped member attached to the upper side wall S1 of the groove T and the plate-shaped member attached to the lower side wall S2 sandwich the second shaft 4. Therefore, they may be arranged at positions deviated from each other in the first direction D1.
  • the vibrator 2 can be easily vibrated along the first direction D1 and between the vibrator 2 and each shaft. Unnecessary friction can be reduced.
  • FIG. 17 is a perspective view of the vibrator 2 in a state in which a fourth modification of the second member 7 in the linear vibration motor 100B is fitted in a groove T formed on the other side surface of the substrate 2a.
  • FIG. 18A is a perspective view of a fourth modification of the second member 7.
  • FIG. 18B is an enlargement of the dotted line portion A of FIG. 17, and shows a state in which a fourth modification of the second member 7 is fitted into a groove T formed on the other side surface of the substrate 2a. It is a perspective view.
  • FIG. 18B also shows the second shaft 4 so that the state of contact with the second member 7 can be understood.
  • the second member 7 is a member having a U-shaped cross section orthogonal to the first direction D1 when it is fitted into the groove T of the substrate 2a.
  • the distance between one end and the other end of the second member 7 in the above cross section before being fitted into the groove T is wider than after being fitted into the groove T. That is, the second member 7 is elastically deformed when it is fitted into the groove T, and is fixed in the groove T by abutting with the upper side wall S1 and the lower side wall S2 on the drawing of the groove T, respectively. Will be done.
  • FIG. 17 the case where the second member 7 is arranged at the central portion of the groove T in the length direction is shown.
  • the second shaft 4 includes at least one of a portion of the U-shaped second member 7 that is in contact with the upper side wall S1 of the groove T and a portion that is in contact with the lower side wall S2. It is slidably abutted in the third direction D3 described above. As shown in FIG. 18B, it is preferable that both of the above portions of the second member 7 and the second shaft 4 are in contact with each other.
  • stainless steel such as SUS304, phosphor bronze, and a resin material such as polyacetal
  • metallic materials such as stainless steel and phosphor bronze have high strength, and resin materials such as polyacetal have a low coefficient of dynamic friction as described above.
  • the slidability may be improved by coating the surface of a metal material such as stainless steel and phosphor bronze with a film of a resin material such as polytetrafluoroethylene.
  • the second member 7 is arranged at the central portion in the length direction of the groove T, but the present invention is not limited to this. Further, a plurality of second members 7 may be arranged in the groove T.
  • the width of the second member 7 in the first direction D1 is preferably 2 mm or less.
  • the vibrator 2 can be easily vibrated along the first direction D1 and between the vibrator 2 and each shaft. Unnecessary friction can be reduced.
  • the fourth modification of the second member 7 can be produced by simply cutting a bent thin plate-shaped metal member when the material is metal. Therefore, the height along the third direction D3 when fitted into the groove T of the substrate 2a can be suppressed, and the thickness of the vibrator 2 can be reduced.
  • the material is resin
  • a molded product having a predetermined shape can be manufactured in advance by molding or the like. Therefore, the shape accuracy of the second member 7 can be improved, and the variation in friction between the vibrator 2 and each shaft can be reduced.
  • the fourth modification the second member 7 is fixed by fitting the substrate 2a into the groove T regardless of the material, so that the vibrator 2 can be easily assembled. .. Further, the manufacturing cost can be reduced.
  • FIG. 19 is a perspective view of the vibrator 2 in a state in which a fifth modification of the second member 7 in the linear vibration motor 100B is fitted in a groove T formed on the other side surface of the substrate 2a.
  • FIG. 20A is a perspective view of a fifth modification of the second member 7.
  • FIG. 20B is an enlargement of the dotted line portion B of FIG. 19, and shows a state in which a fifth modification of the second member 7 is fitted in a groove T formed on the other side surface of the substrate 2a. It is a perspective view.
  • FIG. 20B also shows the second shaft 4 so that the state of contact with the second member 7 can be understood.
  • the second member 7 is a tubular member having an oval-shaped cross section orthogonal to the first direction D1 when fitted into the groove T of the substrate 2a.
  • the oval shape is a shape including an oval shape, an oval shape, an oval shape, and the like.
  • the width along the third direction D3 in the above cross section before being fitted into the groove T is wider than after being fitted into the groove T. That is, the second member 7 is elastically deformed when it is fitted into the groove T, and is fixed in the groove T by abutting with the upper side wall S1 and the lower side wall S2 on the drawing of the groove T, respectively. Will be done.
  • FIG. 19 the case where the second member 7 is arranged at the central portion of the groove T in the length direction is shown.
  • the second shaft 4 includes at least one of a portion of the tubular second member 7 that is in contact with the upper side wall S1 of the groove T and a portion that is in contact with the lower side wall S2, as described above. In the third direction D3 of the above, the contact is slidable. As shown in FIG. 20B, it is preferable that both of the above portions of the second member 7 and the second shaft 4 are in contact with each other.
  • the material of the fifth modification of the second member 7 the same material as the above-mentioned fourth modification can be used.
  • the second member 7 may be arranged at any position in the length direction of the groove T. Further, a plurality of second members 7 may be arranged in the groove T. The width of the second member 7 in the first direction D1 is preferably 2 mm or less.
  • the vibrator 2 can be easily vibrated along the first direction D1 and between the vibrator 2 and each shaft. Unnecessary friction can be reduced.
  • the material when the material is metal, it can be produced only by cutting a thin tubular member. Therefore, the height along the third direction D3 when fitted into the groove T of the substrate 2a can be suppressed, and the thickness of the vibrator 2 can be reduced.
  • the material when the material is resin, a molded product having a predetermined shape can be manufactured by extrusion molding or the like in advance. Therefore, the shape accuracy of the second member 7 can be improved, and the variation in friction between the vibrator 2 and each shaft can be reduced.
  • the second member 7 is fixed by fitting the substrate 2a into the groove T regardless of the material, so that the vibrator 2 can be easily assembled. .. Further, the manufacturing cost can be reduced.
  • a portable information terminal 1000 showing a schematic form of an electronic device in which a linear vibration motor according to this disclosure is used will be described with reference to FIG.
  • FIG. 21 is a transparent perspective view of the portable information terminal 1000.
  • the portable information terminal 1000 includes a device housing 1001, a linear vibration motor 100 according to the disclosure, and an electronic circuit (not shown) related to transmission / reception and information processing.
  • the device housing 1001 includes a first portion 1001a and a second portion 1001b.
  • the first portion 1001a is a display and the second portion 1001b is a frame.
  • the linear vibration motor 100 is housed in the equipment housing 1001.
  • the linear vibration motor 100 is used for skin sensation feedback or as a vibration generator for confirming a key operation or an incoming call by vibration.
  • the linear vibration motor used in the portable information terminal 1000 is not limited to the linear vibration motor 100, and may be any linear vibration motor according to the present disclosure.
  • the linear vibration motor according to the present disclosure can easily vibrate the vibrator in one direction and reduce unnecessary friction between the vibrator and the guide fixed to the housing. it can. Therefore, the portable information terminal 1000 can generate sufficient vibration for skin sensory feedback and confirmation of key operation, incoming call, and the like.
  • a pair of a second magnet M2 and a fourth magnet M4, and a pair of a third magnet M3 and a fifth magnet M5 are used as a mechanism for transmitting the vibration of the vibrator 2 to the housing 1.
  • the magnetic spring mechanism has been described, but is not limited to this.
  • a mechanical spring mechanism such as a coil spring or a leaf spring may be used instead of the magnetic spring mechanism.
  • a portable information terminal provided with a display is shown as an example of a schematic form of an electronic device in which the linear vibration motor according to this disclosure is used, the present invention is not limited to this.
  • the electronic device according to this disclosure does not have to include a display.
  • mobile phones such as feature phones
  • smartphones portable video game machines
  • controllers for video game machines controllers for VR (Virtual Reality) devices
  • smart watches tablet personal computers
  • notebook personal computers etc.
  • remote controllers used for operating televisions touch panel displays
  • electronic devices such as various toys.
  • the invention according to this disclosure is applied to a linear vibration motor used, for example, for skin sensation feedback in an electronic device or as a vibration generator for confirming a key operation or an incoming call by vibration.
  • the skin sensation feedback includes, for example, expressing a tactile image corresponding to an operation in a video game (for example, opening / closing a door or operating a steering wheel of a car) by vibration of a controller.
  • a tactile image corresponding to an operation in a video game for example, opening / closing a door or operating a steering wheel of a car
  • other skin sensory feedback may be used.

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  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
PCT/JP2020/043217 2019-11-29 2020-11-19 リニア振動モータ、およびそれを用いた電子機器 WO2021106741A1 (ja)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023047697A1 (ja) * 2021-09-27 2023-03-30 株式会社村田製作所 リニア振動モータ
WO2023047696A1 (ja) * 2021-09-27 2023-03-30 株式会社村田製作所 リニア振動モータ

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6029854B2 (ja) * 2012-05-22 2016-11-24 ミネベア株式会社 振動子及び振動発生器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61173661A (ja) * 1985-01-26 1986-08-05 Omron Tateisi Electronics Co 円筒型リニアパルスモ−タ
JP2006125516A (ja) * 2004-10-28 2006-05-18 Ntn Corp 含油焼結軸受
JP2011078149A (ja) * 2009-09-29 2011-04-14 Nidec Sankyo Corp 直線駆動装置および光学素子駆動装置
JP2011097747A (ja) * 2009-10-29 2011-05-12 Nidec Copal Corp 振動アクチュエータ
JP2016008669A (ja) * 2014-06-25 2016-01-18 ポーライト株式会社 焼結含油軸受及びリニアアクチュエータ
WO2019151232A1 (ja) * 2018-02-01 2019-08-08 アダマンド並木精密宝石株式会社 リニア振動アクチュエータ

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5937672B2 (ja) * 1979-03-19 1984-09-11 年生 指田 超音波振動を利用した回転駆動装置
KR101354773B1 (ko) * 2011-08-04 2014-01-23 삼성전기주식회사 선형진동모터
KR101354858B1 (ko) * 2012-06-29 2014-01-23 삼성전기주식회사 선형진동모터
JP6121173B2 (ja) * 2013-01-22 2017-04-26 ミネベアミツミ株式会社 振動子付ホルダ及び振動発生器
JP6421089B2 (ja) * 2015-07-29 2018-11-07 日本電産コパル株式会社 リニア振動モータ及び該リニア振動モータを備える携帯電子機器
JP6829555B2 (ja) * 2016-06-23 2021-02-10 キヤノン株式会社 振動波モータ及びレンズ駆動装置
WO2018066387A1 (ja) * 2016-10-03 2018-04-12 株式会社村田製作所 振動素子および振動装置
JP6803722B2 (ja) * 2016-10-31 2020-12-23 日本電産コパル株式会社 リニア振動モータ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61173661A (ja) * 1985-01-26 1986-08-05 Omron Tateisi Electronics Co 円筒型リニアパルスモ−タ
JP2006125516A (ja) * 2004-10-28 2006-05-18 Ntn Corp 含油焼結軸受
JP2011078149A (ja) * 2009-09-29 2011-04-14 Nidec Sankyo Corp 直線駆動装置および光学素子駆動装置
JP2011097747A (ja) * 2009-10-29 2011-05-12 Nidec Copal Corp 振動アクチュエータ
JP2016008669A (ja) * 2014-06-25 2016-01-18 ポーライト株式会社 焼結含油軸受及びリニアアクチュエータ
WO2019151232A1 (ja) * 2018-02-01 2019-08-08 アダマンド並木精密宝石株式会社 リニア振動アクチュエータ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023047697A1 (ja) * 2021-09-27 2023-03-30 株式会社村田製作所 リニア振動モータ
WO2023047696A1 (ja) * 2021-09-27 2023-03-30 株式会社村田製作所 リニア振動モータ

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